PA White Masterbatch is a functional masterbatch developed to solve problems of traditional PA products such as uneven white color, easy yellowing under high-temperature processing, and impaired mechanical strength from ordinary titanium dioxide. These traditional PA products include automotive interior parts, electronic enclosures, and home appliance accessories. It focuses on endowing products with uniform pure high-whiteness appearance, long-term anti-yellowing performance and processing stability while preserving PA materials’ heat resistance, mechanical strength and oil resistance, providing solutions for automotive manufacturing, electronic components and home appliance production. It uses substrate-adaptable carriers: high-purity PA6 for PA6, high-crystallinity PA66 for PA66, ensuring over 98% compatibility to avoid titanium dioxide agglomeration or performance decay, while maintaining substrate mechanical properties.
Its core components include high-purity rutile titanium dioxide: silane coupling agent-treated titanium dioxide, achieving L*≥95 and 96%-99% light-shielding rate; anti-yellowing additives: blended hindered phenol antioxidants and phosphite auxiliary antioxidants, limiting yellowing index to ≤2.0 and maintaining ≥86% tensile strength after 1000h heat aging at 200℃; efficient dispersants: blended polyamide wax and fatty acid ester, ensuring ≥98% dispersion via twin-screw mixing (PA6 230-260℃, PA66 250-280℃) and increasing melt flow rate by 10%-16%.
The masterbatch combines excellent high-temperature anti-yellowing and appearance durability with wide scenario adaptability. Stable at -40℃-180℃, it works at PA processing temperatures with adjustable addition 6%-22%, preserving ≥94% heat distortion temperature and ≥1000h creep resistance at 120℃. It fits PA6 automotive interior parts, PA66 electronic enclosures, PA home appliance accessories, and daily necessities, reducing defects and ensuring long-term reliability.
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